Hedley JENKINS
Activity
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Hedley JENKINS made a comment
Studies have shown that only 8.2% of the microfibres in the oceans are of synthetic origin ( see - Microfibers in oceanic surface waters: A global characterization, Science Advances 05 Jun 2020: Vol. 6, no. 23, eaay8493. DOI: 10.1126/sciadv.aay8493 ). How can we be so certain that it is only this 8.2% that we should be concerned about? Certainly my washing...
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Hedley JENKINS made a comment
Forests are an effective means of carbon sequestration only if they are managed, the timber is harvested and, for instance, used as a rot prevention treated construction material. In unmanaged forests the trees which have consumed CO2 from the atmosphere eventually die and rot emitting seriously damaging methane.
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Hedley JENKINS made a comment
Biomass production requires fuel and fertiliser. Its harvesting and transportation requires fuel. Biomass requires drying before being used as fuel. CCS consumes much energy. It is not easy to honestly demonstrate net global warming benefit.
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Hedley JENKINS made a comment
My understanding is that the adoption of a vegetarian diet results in greater quantities of methane being farted into the atmosphere. The global warming potential of methane is 30 times that of CO2.
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Hedley JENKINS made a comment
The straightforward answer to the problem is worldwide mandatory birth control.
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Hedley JENKINS made a comment
What about aircraft engine CO2 emissions at high altitude? Unlike like low level CO2 emissions these have no chance of being washed out by rain or absorbed by vegetation. Nuclear and batteries weigh too heavy for application to aircraft. Hydrogen produced by renewables powered electrolysis might substitute for kerosine. However hydrogen has a much lower energy...
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Hedley JENKINS made a comment
Two points -
1. All the wells in a very high proportion of Europe's offshore gas fields have been being fracked since the 1980's.
2. Good producers will ensure that there are no methane emissions other than in very exceptional circumstances and a good distributor will ensure there are never any methane emissions. -
Hedley JENKINS made a comment
The only credible solution to the baseload conundrum is a worldwide programme of Small Modular Reactor unit construction followed by a similar programme of Fast Breeder Reactor construction.
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Hedley JENKINS made a comment
I'm a 77-year-old who had a complete knee replacement 3 years ago. Prior to the operation, I had severe pain in my knee and both hips. I now walk 10+ miles several times a week, go to the gym for a near full workout and am essentially pain-free. I was heavily into sport, notably rugby, in years gone by and in doing so chipped a bone in my knee. The bone chip...
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Hedley JENKINS made a comment
I hope my eight years old diesel ICE car will hold together for a sufficient time to allow for a battery technology with fewer and more manageable inherent hazards to be developed.
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Hedley JENKINS made a comment
My understanding is that acidity at the entry into the stomach kills the 'good' bacteria in Probiotic supplemented dairy products so they provide zero health benefit.
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Hedley JENKINS made a comment
A tax on 'free sugars' can not be other than good for the health of the nation as well as the exchequer.
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Hedley JENKINS made a comment
No but all too many find the consumption of highly sweetened items very comforting.
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Hedley JENKINS made a comment
My dietitian wife, sadly no longer with us, was always rude about nutritionists - I have an open mind.
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Hedley JENKINS made a comment
Apart from beating Covid-19, Mankind's greatest concern is the management of Global Warming. Global Warming is currently regarded as being a function of Mankind's release of CO2 rather than Mankind's consumption of energy. Therefore it is inevitably both commercially and politically difficult to establish and maintain manageable energy networks at the local...
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Hedley JENKINS made a comment
Reinforced concrete but we forgot all about it for 1,600 years!
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Hedley JENKINS made a comment
The urgent development of publicly acceptable nuclear fusion power generation technology and the urgent worldwide adoption of birth control are both essential if catastrophic anthropogenically induced climate change is to be avoided – please comment.
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Hedley JENKINS made a comment
Promote:
1. The urgent development of publicly acceptable nuclear fusion power generation technology.
2. Worldwide birth control. -
Hedley JENKINS made a comment
Tim’s week 7 feedback constituted a very balanced, fair and well-reasoned summary of the way forward on energy provision – publish it worldwide! The only doubt I have is the extent to which electricity storage and, in particular, pumped-storage will play a part – opportunity, population displacement, ‘nimby’ and economic issues will severely limit uptake....
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Hedley JENKINS replied to Hedley JENKINS
Good stuff but why not even a reference to nuclear in the main course? It is possibly not surprising that other worldly climate scientists fail to acknowledge any merit in the nuclear argument but a failure to make any reference to nuclear discredits the course.
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Hedley JENKINS made a comment
‘Solutions’!? Renewable energy and a few wishy/washy mitigative measures? Not a single reference to nuclear. Get real you climate scientists! Mankind will not survive unless it accepts nuclear power generation. Put aside your prejudices and focus on persuading politicians to urgently provide resources for the development of socially acceptable nuclear power...
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Hedley JENKINS made a comment
An interesting week but the creation of urban heat islands and the vulnerability of monocultures to pests and pathogens, albeit they are issues of major concern, are a function of population increase and development rather than climate change.
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Hedley JENKINS made a comment
Very interesting feedback session. Is there any chance of a transcript as at the end of week 1?
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Hedley JENKINS made a comment
Geo-engineering technique implementation should, and probably will, be prohibited unless and until there is a worldwide agreed expert understanding of all potential side effect implications. Accordingly, it is unlikely such techniques will be adopted as a significant means of climate modification in the foreseeable future.
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Hedley JENKINS made a comment
It seems likely that global warming will, in the short/medium term, cause the climate where I live in the U.K. to become more welcoming and potentially productive. However, in the medium/long term, do I have to be concerned about the effect of Arctic ice loss on the Gulf Stream compromising the U.K. climate?
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Hedley JENKINS made a comment
On the one hand volcanic activity results in massive CO2 emissions resulting in warming of the Earth’s surface whereas, on the other hand, it results in stratospheric aerosol accumulation and consequent surface cooling. Does the balance of outcomes vary from one volcanic event to another, is there a recent time discernible correlation between surface...
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Hedley JENKINS made a comment
My understanding as of now is that our climate is determined by a balance on a series solar radiation related interacting positive and negative feedbacks. The balance has shifted due to man’s activities following the Industrial Revolution the principal change driver being fossil fuel combustion derived CO2 emissions. The theory is elegant. Perhaps the proof...